#43B9BC
Closest named color: Topaz (#13BBAF). oklch(72.2% 0.103 197.5), rgb(67, 185, 188).
Aa
Black text reads best on this color (8.90:1).
About this color
#43B9BC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.103 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.030 away. Black text reads best on it, at 8.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 8.90:1 |
| White text | 2.35:1 |
Values
| HEX | #43B9BC |
| RGB | rgb(67, 185, 188) |
| HSL | hsl(181, 47%, 50%) |
| OKLCH | oklch(72.2% 0.103 197.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #43B9BC | 2.35:1 | Fails | Lc -51.1 | Large or bold text, headings |
| Black text on #43B9BC | 8.90:1 | AAA | Lc 57.8 | Large or bold text, headings |
| #43B9BC text on white | 2.35:1 | Fails | Lc 46.2 | Large or bold text, headings |
| #43B9BC text on black | 8.90:1 | AAA | Lc -55.9 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.
-
Step 50
50
#EFF7F7
oklch(97% 0.008 197)
-
Step 100
100
#DCEEEE
oklch(93.6% 0.019 196.8)
-
Step 200
200
#BFE1E1
oklch(88.5% 0.036 196.5)
-
Step 300
300
#8ECECF
oklch(80.9% 0.065 197.2)
-
Step 400
400 (this color)
#43B9BC
oklch(72.2% 0.103 197.5)
-
Step 500
500
#009DA0
oklch(63.1% 0.107 197.2)
-
Step 600
600
#008487
oklch(55.6% 0.095 197.6)
-
Step 700
700
#006F71
oklch(49.1% 0.084 197)
-
Step 800
800
#005B5D
oklch(42.7% 0.073 197.4)
-
Step 900
900
#004C4E
oklch(37.8% 0.064 197.8)
-
Step 950
950
#002D2E
oklch(27% 0.046 197.1)
#43B9BC with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #ADB1BC | 0.107 |
| Deuteranopia (no green cones) | #9AA3BD | 0.099 |
| Tritanopia (no blue cones) | #00BFBA | 0.025 |
| Achromatopsia (no color) | #A9A9A9 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43B9BC
#43B9BC
oklch(72.2% 0.103 197.5)
- #DE8A8D
#DE8A8D
oklch(72.1% 0.103 17.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #43B9BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.030
- Light Sea Green #20B2AA ΔE 0.036
- Turquoise Blue #06B1C4 ΔE 0.037
- Greeny Blue #42B395 ΔE 0.055
- Dark Turquoise #00CED1 ΔE 0.057
- Medium Turquoise #48D1CC ΔE 0.067
- Greyblue #77A1B5 ΔE 0.073
- Cadet Blue #5F9EA0 ΔE 0.075
Use #43B9BC in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.